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Old 9th April 2012, 06:31 AM   #941
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no offense here but it is so simple to make a good CLC power supply ? i have own 300B set amplifier with SMPS power supply and they were not the
the best sounding ones . same with Dac where switch power supply suck even more ..
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Old 9th April 2012, 08:15 AM   #942
Vix is offline Vix  Yugoslavia
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PSU? l`d just do the one as in Zen V3. Simple, stable, quiet. What more could one wish?
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Old 9th April 2012, 01:00 PM   #943
Anchan is offline Anchan  United States
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Default switchers

Just trying to trim down the size mostly.
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Old 9th April 2012, 09:26 PM   #944
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Quote:
Originally Posted by Anchan View Post
Why might a switcher be bad in this case
My experience with them hasn't been great, but that's just my opinion. I also prefer Coke, Tom Baker is my favorite Doctor Who, and I think String Theory is a little silly.

Here's some more info:

Audio amplifier power supply design - Part 1: Power supply types & transformer considerations
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Old 10th April 2012, 10:20 AM   #945
protos is offline protos  Greece
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I am not an expert at switchers but I think the quality of the switching ps does become important in audio. Then it becomes expensive of course.
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Old 11th April 2012, 07:52 PM   #946
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Default L'amp CCS Resistor Values

Hi Mike and All,

Can you tell me the wattage on the 1 ohm resistor after the IXTH6N50D2?
Is it 30 watts? 19x1.6= 30.4w ? The heat sink in the photo has a serial pair that look like 3w resistors, but I am unsure. Is the mosfet taking most of the current?

R1 is typical 3w?

The rest are 1/4w at the gate of the SIT.

Thanks,

Vince
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Old 11th April 2012, 07:59 PM   #947
generg is offline generg  Germany
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Hi Vince,

a 10Watt 1R resitors does a good job in my circuit

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Old 11th April 2012, 08:01 PM   #948
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Thanks Generg. Happy birthday!
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Old 11th April 2012, 08:31 PM   #949
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Vince, at 1.6A bias, the voltage drop across that 1 ohm resistor is 1.6V,
and the power dissipation is (1.6 * 1.6) watts. I would be safe and go with
10W as Generg suggested.

BTW, where are you getting the IXTH6N50D2 part?

Generg, happy birthday!
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Old 11th April 2012, 08:46 PM   #950
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Thanks Dennis.

I just purchased the IXTH6N50D2 from Digikey. They had about 24 of them left. I picked up 4 of them.

Vince
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